Abstract: A non-hierarchical infrastructure for managing twin-security keys of physical persons or of elements includes a public key and a private key with a public key certificate. The structure does not include any certification authority distinct from the physical persons or elements, but does include at least one registering authority and its electronic notary server. There is provided at least one registering authority and its electronic notary server for a circle of trust. The registering authority includes local registering agencies. The local registering agency establishes, after face-to-face verification of the identity of the physical person or of the identification of the element, a public key certificate, and a “public key ownership certificate”, which does not contain the public key of the person or of the element but the print thereof, and which is transmitted in a secure manner to the associated electronic notary server for storing in a secure manner.

Abstract: A non-hierarchical infrastructure for managing twin-security keys of physical persons or of elements includes a public key and a private key with a public key certificate. The structure does not include any certification authority distinct from the physical persons or elements, but does include at least one registering authority and its electronic notary server. There is provided at least one registering authority and its electronic notary server for a circle of trust. The registering authority includes local registering agencies. The local registering agency establishes, after face-to-face verification of the identity of the physical person or of the identification of the element, a public key certificate, and a “public key ownership certificate”, which does not contain the public key of the person or of the element but the print thereof, and which is transmitted in a secure manner to the associated electronic notary server for storing in a secure manner.